Well Dave, good question that. To be honest i dont think i have one.
Summer 2009 i cooked a hard drive containing 4 years of my best shots. I was not happy. But hey s**t happens, i got over it.
If i had a proud to have taken shot, it was on that hard drive, taken in totally
nasty conditions on the cumbrian fells. (Dale Head) And there were 2 images that i really loved, Both taken on an Olympus 1030sw compact.
They showed rime ice formations . I think i have a real low res copy about somewhere, i'll try to look them out.

This Tulip shot was taken with a combo of Oly EPL1+ 17 mm at Tulip festival - Dandenong ranges in Australia. I just did small fine tuning in Aperture2 .I just love this and have printed numerous posters.

This was taken from a hotel room window in Hong Kong.
Canon 350D (Rebel). Landscape Mode. 18-125mm lens.

I'd not used my 350D much by this point. Despite having it for over a year, when this was taken, I found it hard to let it replace the Canon S3iS that I'd come to love a lot so was still using this in auto-exposure modes for the most part. I had bought this cheapo 18-125mm lens from eBay in a bid to compensate for the lack of zoom that I was used to with the S3iS :smile:

Technically terrible but this picture sums up her "indoor personality". For once I managed to capture something with the camera that I had not been aware of when pressing the shutter. Something more than just the dog.

I'm mostly a street shooter and I have a lot of shots that other folks like more, but there's something about this one that I keep coming back to. Something about the intimacy with this family that I almost feel like I know them. Shot with a Ricoh GRD3. Picking just one is kind of like having to choose your favorite from among your kids - you can't really do it and it wouldn't feel right if you did. But if you're gonna force me, I'd go with this one. And I might pick a different one tomorrow...

Like Ray says, it is difficult to choose one favorite, as it tends to change over time, but this is definitely the one I keep going back to. It's a shot of my daughter with natural morning sunlight coming almost side way through the window. Taken with my E-P3 and 45mm f/1.8 wide open. Apart from a little cropping, this is straight out of camera JPEG untouched:

If there really has to be one, it's this.
Just because 1/ It's me
2/ Its a self portrait
3/ The conditions at the time were nasty !
And 4/ It was also taken on a phone.IMG_0221 by Fungal infection, on Flickr